% IMPORTANT: The following is UTF-8 encoded. This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.
@INPROCEEDINGS{Lin:1046443,
author = {Lin, Yiyu},
title = {{D}ynamic {M}agnetic {S}tructural {P}roperties of
{F}e{O}𝑥 {N}anoparticles as {D}ispersion},
reportid = {FZJ-2025-03800},
year = {2025},
abstract = {Magnetic nanoparticles (MNPs) exhibit unique size-dependent
magnetic and structural behaviors that are strongly
influenced by their environment. In this work, we focus on
15 nm FeOx nanoparticles due to their chemical stability and
tunable magnetic properties. Using SQUID and PPMS
measurements, we investigated their magnetic dynamics
through hysteresis loops, ZFC/FC magnetization, AC
susceptibility, and relaxation experiments. These techniques
allowed us to determine the blocking temperature and to
distinguish between Néel and Brownian relaxation
mechanisms. Structural responses were studied by SAXS and
DLS under different solvents and external magnetic fields.
We observed that solvent viscosity plays a critical role in
relaxation behavior, with Brownian relaxation dominating at
high temperatures in low-viscosity solvents. Moreover,
field-dependent SAXS revealed anisotropic scattering
patterns, consistent with particle assembly. Model fitting
provided quantitative insights into particle size,
interaction strength, and field-induced aggregation.
Together, these results advance our understanding of how
solvent-mediated interactions and external fields couple the
magnetic and structural dynamics of FeOx nanoparticles, with
implications for biomedical and soft-matter applications.},
organization = {Master Thesis Defense,
Forschungszentrum Jülich, JCNS
(Germany)},
subtyp = {Invited},
cin = {JCNS-2 / JARA-FIT},
cid = {I:(DE-Juel1)JCNS-2-20110106 / $I:(DE-82)080009_20140620$},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632) / 6G4 - Jülich Centre for Neutron
Research (JCNS) (FZJ) (POF4-6G4)},
pid = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G4},
typ = {PUB:(DE-HGF)31},
url = {https://juser.fz-juelich.de/record/1046443},
}